Compound system for transmitting a plurality of values



ne 28 1927. J" E. RoucKA COMPOUNDSYSTEM FOR TRANSMITTING PLURALITY 0FVALUES Filed Jan. 15,` i924@ INVENTQR frch Raza ka,

BY v

ATTORNEYS 'pio yage of which is varied Ptented June 28, 1927.

UNITED STATES PATENT oFFici-z.

' ERICH BOUKA, OF BLANSKO, CZECHOSLOVAKIA.

Application nled January 15,

This invention relates in general to a system for transmitting avariable value suchcas a quantity or condition by means of impulses ofauxiliary energy at dii'erent time positions in equal intervals of timedependent upon the magnitude of the condition as functions oi' a`measure of said value. More particularly the invention relates to a sstem of this character for compounding the eiects of a plurality ofvalues and indicating or transmitting the vresultant eiect or value of aplurality of component values, such for instance as the flow of a fluid,the pressure thereof and the temperature.

The primary object of the invention is to provide a system of thecharacter described including a lever or lever system the leverinaccordance with each of thecomponent values and rcooperating with anauxiliary value regularly variable in cycles lof equal intervals oftime, said lever system cooperating with means for producing impulses ofauxiliary energy, whereby im of auxiliary energy are producedatdifferent time positions 1n corresponding intervals of time as functionsof the resulta-nt eiect or value produced by compound action of all ofsaid plurality of component values. Other objects are to provide such asystem in which the leverage of the system is varied in cycles of equalintervals of time to control production of impulses of auxiliary enerthe time positions of which in correspon 'ng intervals indicate or arefunctions of the resultant effect `of the component values; teerovidesuch a system particularly adap for indicating or transmitti thecomponent effect of a plurality of lui values, and to obtain otherresults and advantages as maybe brought out by the followingdescription.

In the accompanying drawing I have schematically shown a the inventionparticularly adapted for use in indicating, measuring or transmittingvariations in the resultant effector value reduced by the compoundeffects of the ow 'of a fluid, the pressure thereof and the temperature,but it will be understood that the invention is susceptible of use insystems for measuring or transmitting variatiom in values.

system embodying 19M, Serial No. 686,329, andjn Czechoslovakia January15, 1828.'

In said drawings,

Figure 1 is a partial section and partial side elevation of a system ofapparatus ein# bodying the invention, and

Figure 2 is a transverse vertical sectional view, taken on the line 2-2of Figure 1.

Specifically describing the embodiment of the invention shown on thedrawings, the reference character 2 designates a conduit through whichlows steam, the flow of which is the value to be measured in the presentinstance. A flow resistance device 4 is arranged within the conduit 2,and a device 10 sensitive to dii'erences in pressure of the fluid atopposite sides of the device 4 is connected by means of pipes 6 to theconduit 2. The device 10.is of known construction and includes twochambers containing mercury and connected by a tube, saidchambers beingbalanced on a fulcrum 12. At the inlet side of 'the conduit 2 isconnected a pipe 38 which conducts the fluid to a cylinder 32 behind apiston 34 so that said piston is sensitive to the pressure of theincoming fluid. A spring 36 is arranged to oppose the effect of thefluid pressure on the piston 34.-

A temperature responsive device 76, which may contain a temperatureresponsive fluid, is arranged within the conduit 2 and is connected by apipe 7 4 to a cylinder 72 behind a piston 70 so that the piston 70 issensitive to variations in temperature of the yfluid in the conduit 2.A'spring 71 opposes the elect of the pressure of the fluid in thecylinder 72 on the piston 70.

Onevof the chambersof the pressure difference responsive device 10 isconnected by a link 16 to one end of a lever 18 mounted on a fulcrum4roller 26l which is rotatable on an axle 260 carryin two bearingrollers 280 movable on a gui e support 28. The other end of said lever18 is connected by a link 24 to one `end of a lever 40 fulcrumed on aroller 42 movable over a fixed support 44 in a manner similar to thearrangement of roller 26 on support 28. The other end of said lever isconnected by a link 56 to one end of a lever 58 fulcrumed on a roller 64movable as are the rollers 26 and 42 over a fixed support" 66.. Theother end of the' *by a compression spring 78 the prees of which isvariable bymeans of a set screw 80. The two levels 18 and 58 aremaintained against longitudinal movement by the respective flexiblestrips 20 and 60 one end of each of which is connected to therrespective lever and the other end of eachbf which is connected to'therespective fixed support 22 and 62.

The fulcrum roller 26 of the lever 18 is movable by means of the piston34 through a rod 30 connected to axle 260 whereby the leverage of thelever 18 is varied in accordance with variations in the pressure of theincoming fluid. The fulcrum roller 64 is similarly moved by the piston70 through a rod 68 so that the-leverage of thelever 58 is varied inaccordance with variations in the temperature of the Huid in the conduit2. In accordance wtith the invention, fthe lever system so far describedcooperates with an auxiliary value regularly variablewin cycles of equalregular intervals of time, said auxiliary value comprising in thepresent instance the force of spring 78 and serving to compensate theforces produced by the original values in their respectivefsensitivedevices, in the present instance the pressure difference in the -device10, the pressure in the device 32, 34 and the temperature' in the;device 70 72. For this purpose, the axle of the fulcrum roller 42 has apin and slot connection with one end of a bell crank lever 46 pivotallymounted intermediate its ends on a fixed support as at 47..,The arms ofthe bell crank lever 46 are provided with the respective rollers 48arranged substantially equidistantly from the pivot of the lever, saidrollers being` adapted to follow the cam 50 driven through worm and wormwheel gearing 52 by a motor 54. In the present instance this motor iselectric and synchronous, and is connected to a source of alternatingcurrent by means of the wires 116. The motor 54 is constantly driven sothat the fulcrum roller 42 is constantly moved back and forthlongitudinally of the lever 40 in regular cycles of equal intervals oftime each determined by one revolution ofthe cam 50. It will be notedthat this movement of the roller 42 varies the leverage of the lever 40which in turn influences thelcver 58 so as to vary the pressure of thespring 78. At some moment during each interval of time determined by onerevolution of the cam 50 the force actuating .the pressure differencesensitive device 10 'is compensated by the pressure of the spring 78 sothat the lever 18 is moved about its fulcrum 26. It will be noted thatthe ressure of the spring 78 is also influen the movable fulcrums 26 and64 ofthe levers 18 and 58, so that the moment of compemation between theforce of the spring 78 and the device 10 is also varied by variations inthe pressure of the incoming uid and the temperature thereof. In otherwords,

by mg the pen point. The other end of e the lever 18 is moved inaccordance with the resultant effect or value produced by the compoundaction of all of the component ralues'f of the fluid flowing through theconuit 2.

The time position of the movement of the lever 18 in an interval of timedetermined by a revolution of the cam 50 is a function of the saidresultant effect of the component' values, it being understood that thistime position will vary in accordance with the variations in thecomponent values. In accordance with the invention, means is provided tocooperate with the lever system above-described to produce or cont-rolproduction of impulses of auxiliary energy v which impulses are utilizedto actuate a recei or measuring means in accordance with t e timepositions of said impulses in corresponding intervals of time. In thepresent instance the auxiliary energy is electric and represented by thesource of electricity 90. The end of the lever 18 connected to thepressure difference responsive device 10 carries an adjustable screw 84adapted to cooperate with a switch mechanism 86, 88 to control. thecircuit through the source 90 and the receiving means, so that uponeachmovement of the lever 18 in accordance with the resultant effect ofthe component values, the screw 84 is forced into engagement with theswitch mechanism so as to close the circuit through the source 90 andthe receiving means to produce an impulse pfauxiliary energy foractuating the receiving means.

The receiving means itself may be of any suitable construction, but inthe present instance is the same as heretofore described in several ofmy copending applications. Said means includes a `synchronous electricmotor which may be' connected to the same source of current as the motor54 and which drives through worm and worm wheel gearing 102 a cam 104 insuch a manner that the vsaid cam moves synchronously with the cam 50. Alever 110 is pivotally mounted intermediate its ends on a fixed support108 and carries at one end aroller 106 which follows the cam 104. Theother end of the lever 110-carries a pen point 113" adapted to cooperatewith a traveling record stri '112. The pen point 113 is normally spafrom the record strip 112 -and is constantl Yoscillated transversely ofthe strip. by e cam 104. A lever 96 is pivotally mounted intermediateits ends on a fixed support with one end overlying the end of the lever110 lever 96 carnes an armature 94 cooperating with electromagnets 92connected in circuit 'inl um w of l o. '.le'.' l" With thisconstruction, upon ea imp .l of auxiliary energy, the electromagneta 92are energized so as to attract the armature u 94 and .oscillate thelever 96 to force the pen point 113 into engagement with the recordstrip 112, whereby a dot is produced on the record strip indicatingtheytime position of the'im ulse in the interval of time determined ythe cams 50 and 104. The record of the time positions of the variousimpulses consists of a continuous line 114 of dots, each of whichrepresents the resultant eifect or value produced by the compound actionof the pressure difference of the fluid, the temperature of the fluidand the pressure thereof at the moment of compensation of the forcesproduced by each of these values by the re larly variable auxiliaryva'lue produced y the spring 78 and the movable fulcrum rollerc42.

It should be lunderstood that the present application is basedparticularly upon the transmitting apparatus, the general combination oftransmitting apparatus of this type and receiving means to cooperatetherewith being described and claimed in my eopending application SerialNo. 625,153, filed March 14, 1923. Impulse transmitting systems of thisgeneral character are also disclosed in Patents Nos. 1,412,586 and1,434,064 of April 11, 1912, and October 31, 1922, respectively.

While I have shown and described mechanism embod ing certain details ofconstruction, it will understood that it is within the scope of theinvention to modify or change these details `or utilize other mechanismwithin the skill of a mechanic to produce the objects of the invention.Therefore, I do not desire to be understood as limiting myself except asrequired by the following claims when construed in the light of thepriorart. I y

Having thus described the invention, what I c'laim is:

1. In a system for transmitting variable conditions, the combination ofa plurality of sensitive devices each movable responsive Vto andcorresponding to variations in the magnitude of one of a plurality ofdifferent component conditions, a lever system including a plurality ofleyers, means connecting one end of one of said levers to one of saiddevices, means connecting the other end of said` lever to one end of asecond lever, lmeans connectingthe other end of said second lever to oneend of a third lever, means for a plying a constant auxiliary force to te other end of said third lever, a movable fulerum intermediate the endof each of said levers, means for varying the position of the 4ulcrum ofthe second lever in regular cycles of equal intervals of time, meanscooperating With the first-mentioned end of said first-mentioned leverfor producing impulses of auxiliary energy, and operative connectionsbetween each of the ulcrums of the first-mentioned lever and the thirdlever and two others of said sensitive devices respectively for varyingthe positions of said fulcrums corresponding to the magnitudes of therespective component conditions, whereby during each of said cycles animpulse of auxiliary energy is produced the time position of which insaid cycle is a function of the resultant value produced by compoundaction of said component conditions.

2. In a system for transmitting variable conditions, the combination ofa plurality of sensitive devices each movable respon- -sive to andcorresponding to variations in the magnitude of. one of a plurality ofdifferent component conditions, a lever system including a plurality oflevers, means intel'-4 connecting said levers so that movement of oneinfluences the others, means for connecting one of said sensitivedevices to one of said levers, means actuated by each of the othersensitve devicesfor varying the leverage of said lever system inaccordance with variations in the magnitude ofthe respective condition,means for applying a constant auxiliary force to said lever system tocompensate the forces produced bv said sensitive devices in said leversystem, means cooperatingwith said lever system for producing impulsesof auxiliary energy at the moments of compensation, and means forregularly varying the relation of said constant auxiliary force to saidlever system in cycles of equal intervals of time, whereby during eachof said cycles an impulse of auxiliaxt'; energy is produced at a timerposition in e corresponding cycle as a function of the resultant valueproduced by compound action of said component conditions.v

d ERICH .ROUKA

